Coat of arms of Coningsby

The blazon

quarterly ; first and fourth, ar. two lions, passant, gu.; second and third, gu. three conies, sejant, ar, [These Arms were thus borne by John Baron Coningsbie, who was slain in the Barons Wars, at Chesterfield, in Derbyshire, temp. King John, 1266.]

A blazon is the description of a coat of arms in the technical language of heraldry. The drawing comes from that text, and from nothing else.